123130201237 has 2 divisors, whose sum is σ = 123130201238. Its totient is φ = 123130201236.

The previous prime is 123130201231. The next prime is 123130201291. The reversal of 123130201237 is 732102031321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90149462001 + 32980739236 = 300249^2 + 181606^2 .

It is a cyclic number.

It is not a de Polignac number, because 123130201237 - 2⁷ = 123130201109 is a prime.

It is a super-2 number, since 2×123130201237² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123130201231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61565100618 + 61565100619.

It is an arithmetic number, because the mean of its divisors is an integer number (61565100619).

Almost surely, 2^123130201237 is an apocalyptic number.

It is an amenable number.

123130201237 is a deficient number, since it is larger than the sum of its proper divisors (1).

123130201237 is an equidigital number, since it uses as much as digits as its factorization.

123130201237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 123130201237 its reverse (732102031321), we get a palindrome (855232232558).

The spelling of 123130201237 in words is "one hundred twenty-three billion, one hundred thirty million, two hundred one thousand, two hundred thirty-seven".